could some explain to me what

revenue inflow and revenue outflow is, looked on the net ut cant find anything.....

Revenue inflow is how much profit you are making.

Revenue outflow is how much of that profit you are spending on your business.

We bring in 100K a month (revenue inflow) after payroll and rent and operating expneses (revenue outflow) we have 10K left as a profit.

Not sure about revenue outflow - l think l need some context to be able to answer this one. Are you American?

'Revenue inflow ' would refer to cash that comes into a business through sales.

'Revenue outflow' - l am sorry to say, but l have no idea. My best guess would the the direct cash that is paid to generate sales (cost of sales).

MY guess would be

inflow = money and resources in = income
outflow = expenditure,costs

Why do not they use plain English on these forms anyway

l am trying to do a tax return just now

and simply can not understand the language in it either